SpaceDefender

a small space shooter, possible entry for February 1GAM

Gameplay

Player pilots a spaceship of sorts, viewed top-down, flying in a vertical line (upwards). The player can accellerate, decelerate and move left/right. The ship's primary weapon is a fast-firing low-powered projectile gun on the front of the ship.

Enemies will come down from the top of the screen and travel in the opposite direction. Enemies will come in different sizes and abilities, some with shields and/or weapons of their own.

The player will start with 3 lives. A life is lost when the player's hitpoints reach 0 or when an enemy ship reaches the bottom of the screen.

Waves

Enemies are arranged in attack waves. These waves are predetermined, and must be beaten in the same order to advance in the game. Ideally, 100 waves should be available with a "big" boss every 15 waves or so.

Survival Mode

Alternatively, the player may choose to play in "survival mode", no fixed wave patterns here. Enemies will come in random positions, and keep coming until the player dies.

Weapons upgrades

The player will be able to pick up weapons upgrades when they are dropped by killed enemies. The following upgrades may be found:

• Homing missile. Seeks nearest enemy.
• Double-barrel gun. Doubles 'stock' weapons fire
• Triple-barrel gun. Shoots one center and two diagonal bullets.
• Rockets. High damage, slow firing rockets.

Ship upgrades

In addition, the following ship upgrades may be found:

• Shield
• Heavy Shield
• Extra life

Controls

The following control-schemes are supported:

Keyboard

• Move ship: Arrow keys
• Fire weapon: Space-bar
• Fire alt weapon: Alt

Xbox Gamepad

• Move ship: Left stick
• Fire weapon: A
• Fire alt weapon: B